openrcforums

Nice design. It would be better if you use a separate 5V regulator for the haptic motor. No, it can't be used for 9XR as it has a totally different power board :cry: IMHO, Martin's design is the best suit for 9XR as he designed it for his 9XR. http://openrcforums.com/forum/viewtopic.php?f=5&t=94...

Are you talking about MegaSound or the stock 9x mainboard? On the MegaSound AVCC, AREF and VCC were all connected together. I now uncoupled AVCC and VCC, adding the choke and a cap (to GND). I also moved AREF to AVCC, but now I'm confused - should I keep it as is, or should I tie it to GND? Sorry a...

Am I correct thinking AVCC and AREF should be connected together, as these are both analogue voltages? Since er9x firmware uses an internal analog voltage reference, AREF should be uncoupled from AVCC and tied down to GND via a 100nF capacitor to increase the noise immunity. Refer to 24.5.2 ADC Vol...

If your board is dedicated to the serial interface, you don't need 'CLK' and 'BUSY' signal generator built around two transistors. If so, PC0 and PD2 can also be used for future use in addition to PD3, PD4, PD7, PB0 and PC1/2/3(=X1/2/3). It would be a good idea to put an LC filter(10uH+100nF) option...

Mike, are you going to put all the pre-committed code to Github?
Are you going to migrate amod328 to Github as well?

Mike, thanks for the explanation. Sharing a serial line with a programmer, a voice card and a CPU appears to be tricky to manage. BTW, how bad was the buzzing sound? If we ever add any analog inputs in the future, data must be keep coming into 9x board. Can it be reduced by increasing the baudrate? ...

reprogramming settings is one thing.. Reprogramming that thing completely by wipping it's software completely and leave only the bootloader, might not be that easy? By the way, don't compare the 9x with the mars rover or flysky will increase the price of the radio.. :) João Boot loader section can'...

How do you do it with current MegaSound card without having rerouted trim switch? Boot loader is just a function that can be called from anytime anywhere depending on your implementation. When you're not using serial, you don't need the radio to be in bootloader mode.. Using the serial connection, ...

ooook, so how would you put the voice module in bootloader mode? João You can control it thru a serial port command from 9x firmware. To flash the module, if I'm not mistaken, both radio and voice module need to be in bootloader mode.. How do you send that command if the radio is in bootloader mode...

jhsa wrote: ooook, so how would you put the voice module in bootloader mode?

João

You can control it thru a serial port command from 9x firmware.

jhsa wrote:

flybabo wrote:If you reroute the trim switches using PC0 and LCD_WR, you can replace them by EXT3 and EXT4 options on the 3-POS option list.

I guess the trim switches need to be connected to the voice module to make it fall into bootloader mode?

João

Not really.

If you reroute the trim switches using PC0 and LCD_WR, you can replace them by EXT3 and EXT4 options on the 3-POS option list.

We should actively promote people to learn "fine-soldering" skill to upgrade their CPU to 2561 :D I'm an old fart - if I can do it, anyone can :) I ordered several 2561's since it's on sale at Newark/Element14. http://www.newark.com/atmel/atmega2561-16aur/microcontroller-mcu-8-bit-atmega/d...

@Flybabo, ok it is your choice but I'm sure most of the people that have the sound module like the possibility of connecting to the computer without having to remove the card or opening the radio to flash the module's firmware.. ;) João Understood. For those who have HC1969's MegaSound9x card, SD b...

That's what I'm doing as I don't have any extra serial connections on my voice card which is based on Martin's PCB design. You don't need much to be able to communicate with the PC. You use one diode from the m328 RX pin to pin28 of the radio processor, it can be soldered on the wire itself, and an...

If you just want to flash the amod_lastSer.hex using USBASP, you need to remove the boot loader by setting the fuses by following command: avrdude -c usbasp -P usb -p m328p -B 100 -u -U lfuse:w:0xff:m -U hfuse:w:0xd1:m -U efuse:w:0x05:m And then flash amod_lastSer.hex by another avrdude command: avr...

To handle the conversion of 2-pos to 3-pos switches needs some RAM to make it work 'properly'. Even the '128 is struggling for enough RAM space as it still only has 4K. It is likely I shall need to remove the "throttle trace" option from the '128 version to make things fit. The '2561 will...

IMHO, ALL the hardware related settings should go to eepe regardless of the processor types.
I don't see much benefit on menu-based hardware setting as it's used only once
right after altering the hardware and prone to operator error while playing with the menus.

Maybe it's a time to have all new MegaSound V2.
New business opportunity? Not for me

You've already got 33% performance boost by using an Arduino with 16MHz crystal and this may be good enough for the future enhancement IF it really happens. Replacing the crystal in your Arduino board doesn't seem to need so called fine soldering when it becomes necessary :) If I need to build an au...

Mike, It's an excellent idea to use PB7 for PPM/PXX for accurate waveform generation. It may be a perfect time to add an option to use PB7 for the right purpose - all you need is a simple rerouting and adding one more checkbox in eepe :) ADC may be run in free-running mode. If we need more processin...

Great Mike! I'll add an option for the trim switches rerouted to Atmega PC0/PC4 as soon as you release the source code. It turns out that rerouting of the trim switches is not bad for 9XR board as one can use a 4051 AMUX pin as a soldering point for PC0. If he/she can solder LCD/serial connections t...

Attached MAC version of eepskye built on the latest El Capitan OS version with Qt5 library.
Note that r418 was built on Yosemite OS version with Qt4 library.

EDIT: Added eepskye-r418.zip (July 27, 2015), added eepskye-r419.zip (January 11,2016)

Attached MAC version of eepe built on the latest El Capitan OS version with Qt5 library.
Note that r418 was built on Yosemite OS version with Qt4 library.

EDIT: Added eepe-r418.zip (July 27, 2015), Added eepe-r419.zip (January 11, 2016)

It's always better if we have alternatives for some of us with different skill levels

I rerouted LV trim switches of 9XR board to Pin39(PC4:LCD_WR) and Pin35(PC0:NC). I modified about 10 lines of er9x code and everything works as usual. It required removal of one 5.1K SMD resistor and two trace cuts as shown in the following picture. 2015-02-14 15.25.53.jpg Rerouting LV trim DWN sign...

Mike, is there any problem using LCD_WR and LCD_RESET pins?
I'm working on that direction as I prefer to minimize the wiring between main board and the voice card.
When do you plan to commit the next version of er9x/amod328?
I better to start with the latest and the greatest code.

Since I didn't get the backlight, I checked all the connectivities and it was all OK. I observed that 100Hz negative pulse signal was applied to CLK (pin 4) but no signal at any output pins. I took out the processor, soldered a 28pin DIP socket, put a new processor and programmed a combined hex with...

I don't see the backlight. I might screw up in merging the bootloader and amod_last.hex.
I'll retry sometime in this week.

You have to connect to the same lines the SD Card uses. MISO, MOSI, SCK. Also ypu must connect to the RST. You must remove the sd card everytime you flash. Question, are you using one of those sd card modules we buy on ebay? You can't use a sd card directly with 5v or you will destroy it. I'm tryin...